Wisdom Sage C150i, Owner'S Manual

5

Description

Your Sage C150i loudspeakers take advantage of 
several critical technologies to deliver a level of per-
formance that has never been available in a loud-
speaker that intruded so modestly on your living 
space. In fact, this level of performance has rarely 
been attained, regardless of the space and budget at 
one’s disposal. 

Since most of these technologies cannot readily be 
found elsewhere, we will take the time to describe 
them in more detail than would be necessary for 
more conventional designs.

Planar magnetic panels

Our planar magnetic drivers use an advanced, thin 
film membrane to move the air. This film can re-
spond instantly to the smallest detail in the signal. 
It has vastly less inertia than traditional “cone & 
dome” drivers, so the signal is never blurred in any 

way. 

The motive force is provided by a “voice 
coil” that is printed on the film, which is 
suspended in a strong magnetic field pro-
vided by neodymium magnets behind and 
in front of the film. The ratio of available 
force to the moving mass is huge, which 

means that the diaphragm does exactly what it is told; nothing more, nothing 
less.

Free from compression

One of the most remarkable things about the sound of well-designed planar 
magnetic speakers is their lack of thermal or dynamic compression. There are 
several reasons for this: 

•  The lightweight diaphragm responds quickly to even the smallest 

signals, yet is robust enough to handle enormous ones. 

•  The fact that heat does not build up in the voice coil (as it does 

in conventional dynamic drivers) means that the load seen by the 
amplifier does not change at high power levels. 

When you become accustomed to the sound of your new Sage C150i speakers, 
conventional speakers sound a bit bland and lifeless.

More reliable

The “voice coil” in the planar magnetic driver is spread out over a large, flat area 
that is exposed to the open air. As such, when a huge transient comes along, 
any heat that is generated is immediately dissipated. This compares quite favor-
ably to other designs in which the voice coil is buried inside a massive piece of 
metal, where the heat has effectively no place to go.